Question

Professional baseball pitchers deliver pitches that can reach the blazing speed of 100 mph (miles per hour). A local team has drafted an up-and-coming, left-handed pitcher who can consistently pitch at 42.24 m/s (94.50 mph). Assuming a pitched ball has a mass of 0.1422 kg and has this speed just before a batter makes contact with it, how much kinetic energy does the ball have? Kball = J Recall that the acceleration due to gravity is 9.81 m/s^2. How high would the ball need to be dropped from to attain the same energy as it did when it was pitched (neglect air resistance)? Hball = m

          Professional baseball pitchers deliver pitches that can reach the blazing speed of 100 mph (miles per hour). A local team has drafted an up-and-coming, left-handed pitcher who can consistently pitch at 42.24 m/s (94.50 mph).
Assuming a pitched ball has a mass of 0.1422 kg and has this speed just before a batter makes contact with it, how much kinetic energy does the ball have?
Kball = J
Recall that the acceleration due to gravity is 9.81 m/s^2.
How high would the ball need to be dropped from to attain the same energy as it did when it was pitched (neglect air resistance)?
Hball = m

Added by William L.

Question

Please give Ace some feedback